[vsnet-grb-info 21312] Fermi GRB 181105.31: Global MASTER Net optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  23411
SUBJECT: Fermi GRB 181105.31: Global MASTER Net optical observations 
DATE:    18/11/06 13:17:47 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

V. Lipunov, E. Gorbovskoy, V.Kornilov, D.Kuvshinov, N.Tyurina,  P.Balanutsa,
A.Kuznetsov, V.V.Chazov, D. Vlasenko
Lomonosov Moscow State University,
Sternberg Astronomical Institute, Moscow State University

A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov
Kislovodsk Solar Station of the Pulkovo Observatory

K. Ivanov, O. Gres, N.M. Budnev, S. Yazev, O. Chuvalaev, V. Poleshchuk
Irkutsk State University

V. Yurkov, A. Gabovich, Yu. Sergienko
Blagoveschensk Educational State University, Blagoveschensk

R. Podesta, Carlos Lopez and F. Podesta
Observatorio Astronomico Felix Aguilar (OAFA)

Hugo Levato and Carlos Saffe
Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)

R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres
The Instituto de Astrofisica de Canarias

D. Buckley, S. Potter, A. Kniazev, M. Kotze
South African Astronomical Observatory


MASTER-Tunka robotic telescope (MASTER-Net: http://observ.pereplet.ru, 
Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in 
Russia (Applied Physics Institute, Irkutsk State University) was starting 
survey on the FERMI  GRB181105.31 error-box (ra=21 12 52 dec=+78 31 00 
r=4.88)  11567 sec after notice time and 11611 sec after trigger time at 
2018-11-05 10:46:46 UT. The 5-sigma upper limit on our first (60s 
exposure)  set is about 17.1mag

The OT candidate available here 
https://90.188.52.90:20103//master2/trans.php?wh=transients.coord2000@%27%3C%28318.217d%2C78.5167d%29%2C12.76d%3E%27%3A%3Ascircle+and+transients.datetime%3E%3D%272018-11-05+07%3A33%3A15%27&class=9&t2=FERMI+GRB181105.31+optical+counterpart+candidate

The full information about this GRB181105.31 available here 
https://90.188.52.90:20103//master2/grb.php?not=2018-11-05+07%3A33%3A59.700222&sat=FERMI&gcrd=%28318.217d%2C78.5167d%29&eb=4.88&trig=2018-11-05+07%3A33%3A15&n=GRB181105.31
The message may be cited.


====================================================================


The galactic latitude b = 20 deg., longitude l = 113 deg.
The observations made on zenit distance = 27 deg.The moon ( 6 % bright 
part) below the horizon (The altitude of the Moon is -16 deg. ).
  Observations started at twilight.
The sun  altitude  is -11.7 deg.
The object can be observed till sunrise at 2018-11-05 00:11:25

MASTER-Tavrida robotic telescope (MASTER-Net: http://observ.pereplet.ru, 
Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in 
Russia (Lomonosov MSU, SAI Crimea astronomical station) was starting 
survey on the FERMI  GRB181105.31 error-box (ra=21 12 52 dec=+78 30 59 
r=4.8833)  30182 sec after notice time and 30236 sec after trigger time at 
2018-11-05 15:57:12 UT. The 5-sigma upper limit on our first (60s 
exposure)  set is about 18.36mag

The OT candidate available here 
https://195.20.29.135:1243/master2/trans.php?wh=transients.coord2000@%27%3C%28318.217d%2C78.5164d%29%2C12.7666d%3E%27%3A%3Ascircle+and+transients.datetime%3E%3D%272018-11-05+07%3A33%3A15.63%27&class=9&t2=FERMI+GRB181105.31+optical+counterpart+candidate

The full information about this GRB181105.31 available here 
https://195.20.29.135:1243/master2/grb.php?not=2018-11-05+07%3A34%3A10.309105&sat=FERMI&gcrd=%28318.217d%2C78.5164d%29&eb=4.8833&trig=2018-11-05+07%3A33%3A15.63&n=GRB181105.31
The message may be cited.


====================================================================


The galactic latitude b = 20 deg., longitude l = 113 deg.
The observations made on zenit distance = 34 deg.The moon ( 5 % bright 
part) below the horizon (The altitude of the Moon is -23 deg. ).
  Observations started at twilight.
The sun  altitude  is -16.4 deg.
The object can be observed till sunrise at 2018-11-06 04:25:45
  .

MASTER-Kislovodsk robotic telescope (MASTER-Net: 
http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, 
vol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station 
of Pulkovo observatory) was starting survey on the FERMI  GRB181105.31 
error-box (ra=21 12 52 dec=+78 30 59 r=4.8833)  33733 sec after notice 
time and 33787 sec after trigger time at 2018-11-05 16:56:23 UT. The 
5-sigma upper limit on our first (60s exposure)  set is about 19.03mag

The OT candidate available here 
https://37.29.115.162//master2/trans.php?wh=transients.coord2000@%27%3C%28318.217d%2C78.5164d%29%2C12.7666d%3E%27%3A%3Ascircle+and+transients.datetime%3E%3D%272018-11-05+07%3A33%3A15.63%27&class=9&t2=FERMI+GRB181105.31+optical+counterpart+candidate

The full information about this GRB181105.31 available here 
https://37.29.115.162//master2/grb.php?not=2018-11-05+07%3A34%3A10.309105&sat=FERMI&gcrd=%28318.217d%2C78.5164d%29&eb=4.8833&trig=2018-11-05+07%3A33%3A15.63&n=GRB181105.31
The message may be cited.


====================================================================


The galactic latitude b = 20 deg., longitude l = 113 deg.
The observations made on zenit distance = 36 deg.The moon ( 5 % bright 
part) below the horizon (The altitude of the Moon is -37 deg. ).
The sun  altitude  is -33.2 deg.
The object can be observed till sunrise at 2018-11-06 03:49:15


MASTER-IAC robotic telescope (MASTER-Net: http://observ.pereplet.ru, 
Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in 
Spain (IAC Teide Observatory) was starting survey on the FERMI 
GRB181105.31 error-box (ra=21 12 52 dec=+78 30 59 r=4.8833)  44407 sec 
after notice time and 44462 sec after trigger time at 2018-11-05 19:54:17 
UT. The 5-sigma upper limit on our first (60s exposure)  set is about 
18.5mag

The OT candidate available here 
https://161.72.133.2//master2/trans.php?wh=transients.coord2000@%27%3C%28318.217d%2C78.5164d%29%2C12.7666d%3E%27%3A%3Ascircle+and+transients.datetime%3E%3D%272018-11-05+07%3A33%3A15.63%27&class=9&t2=FERMI+GRB181105.31+optical+counterpart+candidate

The full information about this GRB181105.31 available here 
https://161.72.133.2//master2/grb.php?not=2018-11-05+07%3A34%3A10.309105&sat=FERMI&gcrd=%28318.217d%2C78.5164d%29&eb=4.8833&trig=2018-11-05+07%3A33%3A15.63&n=GRB181105.31
The message may be cited.


====================================================================


The galactic latitude b = 20 deg., longitude l = 113 deg.
The observations made on zenit distance = 50 deg.The moon ( 4 % bright 
part) below the horizon (The altitude of the Moon is -34 deg. ).
The sun  altitude  is -21.6 deg.
The object can be observed till sunrise at 2018-11-06 07:19:00
  .

The cover map is available at
http://master.sai.msu.ru/static/MASTER_GRB181105.31.png

One possible short OT candidate not connected with GRB was found:

MASTER OT J203829.37+811113.7

MASTER-Tunka auto-detection system discovered OT source at (RA, Dec) = 20h 
38m 29.37s +81d 11m 13.7s on 2018-11-05.47844 UT.
The OT unfiltered magnitude is 16.0m (limit 17.7m).

The OT is seen in 1 image. There is no minor planet at this place.

We have reference image without OT on 2011-08-15.62329 UT with unfiltered 
magnitude limit 19.2m.

Discovery and references images are available at

htttp://www.pereplet.ru/lipunov/images/203829.37811113.7.png

This message can be cited.